January 5, 2011 |
According to the conventional wisdom that liberals accept climate change and conservatives don't, Kerry Emanuel is an oxymoron. Emanuel sees himself as a conservative. He believes marriage is between a man and a woman. He backs a strong military. He almost always votes Republican and admires Ronald Reagan. Emanuel is also a highly regarded professor of atmospheric science at MIT. And based on his work on hurricanes and the research of his peers, Emanuel has concluded that the scientific data show a powerful link between greenhouse gas emissions and climate change.
April 3, 2013 |
Let that long-held breath out, folks. The Alpha Magnetic Spectrometer has picked up a lot of mysterious antimatter in low Earth orbit - but that doesn't necessarily mean it's a sign of dark matter. In fact, even with the 400,000 positrons picked up by the cosmic-ray experiment -- the largest number of such particles ever analyzed in space -- it's unclear whether those positrons result from decaying dark matter, or simply from pulsars sending particles into the universe. "What you have probably seen from the data is a significant new measurement," said Brown University physicist Richard Gaitskell, a lead scientist on a different dark matter detector called the Large Underground Xenon experiment.
August 28, 2013 |
Scientists have caught the first images of a boa constrictor consuming a 9-pound howler monkey, and they are gruesome. In the gallery above, you will see the boa constrictor ingesting the monkey head-first, bit by bit. The images accompany a study describing a play by play of the snake attack published in the journal Primates by Julio Cesar Bicca-Marques of Pontifical Catholic University of Rio Grande do Sul and his student ...
July 27, 2012 |
For the first time, scientists have changed a monkey's behavior with a simple flash of blue light. Well, that and a fancy cellular technique called “optogenetics.” The new research clears an important hurdle on the path toward using the light-based approach to treat human neurological and psychiatric diseases, such as Parkinson's disease and depression. Optogenetics takes advantage of a class of proteins called channelrhodopsins. The proteins naturally reside in the outer walls of some algae, and have a peculiar property: They are activated by light.
CALIFORNIA | LOCAL
May 13, 2013 |
A National Labor Relations Board judge has ordered NASA's Jet Propulsion Laboratory to rescind disciplinary actions against five scientists who shared emails at work about a Supreme Court decision on background security checks for JPL employees. Administrative Law Judge William G. Kocol ordered JPL to purge disciplinary letters related to the case from the employee files of Dennis Byrnes, Scott Maxwell, Larry D'Addario, Robert Nelson and William Bruce Banerdt. The five were accused of violating rules against unsolicited spam and bulk email.
July 24, 2012 |
Do polar bears face obliteration as a species, not from starvation as the northern ice melts but through interbreeding with brown bears as changes in the climate bring them into contact with each other? Authors of a new report say that's a distinct possibility. The closest relative of the polar bear is the brown bear - matings between grizzlies and polar bears sometimes happen in zoos or the wild, yielding very rare examples of hybrids known as grolar bears or pizzlies. Webb Miller of Pennsylvania State University and colleagues set out to examine the timing of the divergence between the two species, using a whole mess of DNA data - from contemporary brown bears, polar bears and black bears as well as from a polar bear that lived 110,000 to 130,000 years ago. (The ancient DNA was obtained from a jawbone found in Norway.)
March 20, 2013 |
Ladies and gentlemen, the Voyager 1 spacecraft has left the solar system - or has it? Scientists are continuing to debate whether the lonesome craft has finally escaped the solar system after 35 years of travel or has simply entered a previously unknown region of solar influence. On Wednesday, a study published in Geophysical Research Letters , a journal of the American Geophysical Union, suggests that the Voyager spacecraft exited the heliosphere - that region of space dominated by solar winds and long considered to be the edge of the solar system - on Aug. 25, 2012.
July 7, 2012 |
Bipedal robots, in general, are a pretty stilted bunch. Their movements are overarticulated, they wobble, they topple, and when faced with an obstacle -- even one as slight as a slope change -- they often can't overcome it. But that may soon change. This week, researchers from the Univeristy of Arizona published a paper in the Journal of Neural Engineering that describes the development of a new type of robot legs that mimic the neuromuscular architecture of human walking.
September 21, 2010 |
The dark dust thrown up by human activity in the deserts of the Southwest hastens the melting of Rocky Mountain snow and ultimately reduces the amount of water flowing into the upper Colorado River by about 5%, scientists reported Monday. The lost water amounts to more than 250 billion gallons — enough to supply the Los Angeles region for 18 months, said study leader Thomas H. Painter, a snow hydrologist at the Jet Propulsion Laboratory in La Cañada Flintridge. "That's a lot of water," said Painter, whose study was published online by the Proceedings of the National Academy of Sciences.
July 5, 2013 |
What if the solution to smog was right where the rubber meets the road? Scientists in the Netherlands have found that installing special air-purifying pavement on city streets can cut air pollution nearly in half. Researchers at Eindhoven University of Technology outfitted one block in the city of Hengelo, Netherlands, with paving blocks sprayed with titanium oxide, which has the ability to remove pollutants from the air and turn them into less harmful chemicals. The researchers left normal pavement on an adjacent street as a control.